crystal reports

I am trying to get the avg grade in a winform using vb.net and crystal reports.  Below is the code that I have tried that does not work.  How do I find the avg of 3 rows in a crystal report?

{student.grade1} + {student.grade2} + {student.grade3} / 3
this code does not avg the grade

Average ({student.grade1} + {student.grade2} + {student.grade3} / 3)
this one is asking for a required field at the end


freebird317Asked:
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MogalManicCommented:
To compute an average, you need to to the addition first.  Use this expression:
  ({student.grade1} + {student.grade2} + {student.grade3}) / 3


Without the parentheses around the addition, the division is performed 1st and then the other two student grades are added.
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mlmccCommented:
Are the grades in the same record?

if not then
Add a group on the student
Use a summary function - Average and the grade field as the data.

mlmcc
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